[BUG] [Go] name collision

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

Looks like the configuration.go file is exporting severals types that may conflict / collide with names in the API specs. Example: APIKey, Configuration, ServerConfigurations, etc...

openapi-generator version

v7.0.1

OpenAPI declaration file content or url

openapi: 3.0.2
info:
  title: Test API
  version: '0.0'
  contact:
    name: Curvegrid
  description: Test API.
servers:
  - url: 'https://localhost:8080'
tags:
  - name: tests
paths:
  /bug:
    get:
      operationId: test-bug
      summary: Test bug
      description: A test endpoint.
      tags:
        - tests
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/APIKey'
components:
  schemas:
    APIKey:
      title: APIKey
      type: object
      description: An APIKey.
      properties:
        label:
          type: string
      required:
        - label

Generation Details

Steps to reproduce

Generate the code and check if the code is valid / contain types with the same name.

Related issues/PRs

Suggest a fix

Start by generating the Go client from the YAML example and inspect the generated configuration.go, especially the exported types named in the report. Confirm the APIKey schema collides with generated names, then verify that the generated code remains valid without same-name types.